Loading patent…
AssigneeHeine Optotechnik GmbH & Co. KG
InventorsHelmut A. Heine, Hartmut Schloesser, Dirk Schade, Anton Schneider, Otto H. Schmidt, Wolfgang Behrendt, Norbert Merkt
Estimating the term…
In a dermatoscope having a number of light-emitting diodes (7), which are arranged around optics (6), for indirect illumination of an examination area, an optical waveguide (1) is arranged in front of each light-emitting diode (7), the light input surface of which optical waveguide (1) faces the associated light-emitting diode (7) and on whose outer wall the light which is emitted from the light-emitting diode (7) is totally reflected toward the examination area. Instead of a number of optical waveguides (1), a single conical prism is preferably provided, whose base faces the light-emitting diodes (7) and whose cone angle is designed such that the light injected into the base surface from the light-emitting diodes (7) is totally reflected on the outer cone surface.
A dermatoscope comprising a plurality of light-emitting diodes, which are arranged around optics, for indirect illumination of an examination area, and a plurality of optical waveguides, each of said optical wave guides being arranged in front of one associated light-emitting diode and having a light input surface which faces said associated light-emitting diode, said optical waveguides having an outer wall totally reflecting light emitted from said associated light-emitting diode toward said examination area.
A dermatoscope comprising a plurality of light-emitting diodes, which are arranged around optics, for indirect illumination of an examination area, and a single conical prism having a basis surface facing said light-emitting diodes, the cone angle of said conical prism being designed such that the light which is injected into said basis surface from said light-emitting diodes is totally reflected on an outer cone surface of said conical prism.
Dependencies are inferred from the claim text.